heres my combo , i need more.....help

quotes around town for 3in x pipes and flows 500 bucks one said 480, and another said he'll beat the price by 15 bucks.

i'm looking at summits pieces and looks like i can do it for around 250 bucks. this is dumping it right in front of the rear end,the spot that will cause a little build up on the bumper but no biggy.

pic's are a summit x pipe kit $94(will not use clamps)
moroso spiral flow race exaust 16in long$49x2
and sum dumps looking for cheaper $59